The link to the video is here
Let us see if we can agree on what concepts from the Quran are found in the spoken words of the video The video starts with the words:
"Soon, very soon
The blood will spill like an ocean
The kafir throats
Will tremble from the knives."
The justification for cutting the throats of "kafir" with knives can be found in Quran 8:12: "I will throw fear into the hearts of those who disbelieve. Then smite the necks and smite of them each finger." Indeed, a Malaysian ISIS fighter used this verse to justify his participation in beheading.
Later in the video are the words:
"O filthy kafir,
You are not brave at all."
These words are consistent with the concept that the disbeliever is the "worst of all creatures." (Quran 98:6).
We then come to the words:
"We will make your wives
And make your children
That Islam permits slavery and concubinage is found in Quran 33:50 and Quran 70:29-30. Muhammad and the Caliphs, Omar & Ali all had concubines.
Members of the Islamic State do intend to make the Russian people sad: